Fix SlabMemoryAllocator crash when near OOM. #449
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Fixes a crash when SlabMemoryAllocator nears OOM and attempts to use the smallest slab size possible, which could be too small to use for the allocation. This fix makes SlabMemoryAllocator::FindNextFreeSlabOfSize return kInvalidSize.
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Fixes a crash when SlabMemoryAllocator nears OOM and attempts to use the smallest slab size possible, which could be too small to use for the allocation. This fix change it to return kInvalidSize which fails allocation.